It is hard to quickly find what you are looking for in the output of
the ip
command. Color helps.
This patch adds a '-c' flag to highlight these with individual colors:
- interface name
- ip address
- mac address
- up/down state
Signed-off-by: Mathias Nyman <m.ny...@iki.fi>
---
include/color.h | 17 +++++++++++++++
ip/ip.c | 5 ++++-
ip/ipaddress.c | 43 +++++++++++++++++++++++++++----------
lib/Makefile | 2 +-
lib/color.c | 66 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
man/man8/ip.8 | 7 +++++-
6 files changed, 126 insertions(+), 14 deletions(-)
create mode 100644 include/color.h
create mode 100644 lib/color.c
diff --git a/include/color.h b/include/color.h
new file mode 100644
index 0000000..1662c62
--- /dev/null
+++ b/include/color.h
@@ -0,0 +1,17 @@
+#ifndef __COLOR_H__
+#define __COLOR_H__ 1
+
+enum color_attr
+{
+ COLOR_IFNAME,
+ COLOR_MAC,
+ COLOR_INET,
+ COLOR_INET6,
+ COLOR_OPERSTATE_UP,
+ COLOR_OPERSTATE_DOWN
+};
+
+void enable_color(void);
+int color_fprintf(FILE *fp, enum color_attr attr, const char *fmt, ...);
+
+#endif
diff --git a/ip/ip.c b/ip/ip.c
index f7f214b..c23de74 100644
--- a/ip/ip.c
+++ b/ip/ip.c
@@ -23,6 +23,7 @@
#include "utils.h"
#include "ip_common.h"
#include "namespace.h"
+#include "color.h"
int preferred_family = AF_UNSPEC;
int human_readable = 0;
@@ -56,7 +57,7 @@ static void usage(void)
" -4 | -6 | -I | -D | -B | -0 |\n"
" -l[oops] { maximum-addr-flush-attempts } |\n"
" -o[neline] | -t[imestamp] | -ts[hort] | -b[atch] [filename]
|\n"
-" -rc[vbuf] [size] | -n[etns] name | -a[ll] }\n");
+" -rc[vbuf] [size] | -n[etns] name | -a[ll] | -c[olor]}\n");
exit(-1);
}
@@ -257,6 +258,8 @@ int main(int argc, char **argv)
exit(-1);
}
rcvbuf = size;
+ } else if (matches(opt, "-color") == 0) {
+ enable_color();
} else if (matches(opt, "-help") == 0) {
usage();
} else if (matches(opt, "-netns") == 0) {
diff --git a/ip/ipaddress.c b/ip/ipaddress.c
index e582da0..92afa49 100644
--- a/ip/ipaddress.c
+++ b/ip/ipaddress.c
@@ -34,6 +34,7 @@
#include "utils.h"
#include "ll_map.h"
#include "ip_common.h"
+#include "color.h"
enum {
IPADD_LIST,
@@ -136,8 +137,15 @@ static void print_operstate(FILE *f, __u8 state)
{
if (state >= sizeof(oper_states)/sizeof(oper_states[0]))
fprintf(f, "state %#x ", state);
- else
- fprintf(f, "state %s ", oper_states[state]);
+ else {
+ fprintf(f, "state ");
+ if (strcmp(oper_states[state], "UP") == 0)
+ color_fprintf(f, COLOR_OPERSTATE_UP, "%s ",
oper_states[state]);
+ else if (strcmp(oper_states[state], "DOWN") == 0)
+ color_fprintf(f, COLOR_OPERSTATE_DOWN, "%s ",
oper_states[state]);
+ else
+ fprintf(f, "%s ", oper_states[state]);
+ }
}
int get_operstate(const char *name)
@@ -606,7 +614,8 @@ int print_linkinfo(const struct sockaddr_nl *who,
if (n->nlmsg_type == RTM_DELLINK)
fprintf(fp, "Deleted ");
- fprintf(fp, "%d: %s", ifi->ifi_index,
+ fprintf(fp, "%d: ", ifi->ifi_index);
+ color_fprintf(fp, COLOR_IFNAME, "%s",
tb[IFLA_IFNAME] ? rta_getattr_str(tb[IFLA_IFNAME]) : "<nil>");
if (tb[IFLA_LINK]) {
@@ -666,10 +675,11 @@ int print_linkinfo(const struct sockaddr_nl *who,
fprintf(fp, " link/%s ", ll_type_n2a(ifi->ifi_type, b1,
sizeof(b1)));
if (tb[IFLA_ADDRESS]) {
- fprintf(fp, "%s",
ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]),
-
RTA_PAYLOAD(tb[IFLA_ADDRESS]),
- ifi->ifi_type,
- b1, sizeof(b1)));
+ color_fprintf(fp, COLOR_MAC, "%s",
+ ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]),
+ RTA_PAYLOAD(tb[IFLA_ADDRESS]),
+ ifi->ifi_type,
+ b1, sizeof(b1)));
}
if (tb[IFLA_BROADCAST]) {
if (ifi->ifi_flags&IFF_POINTOPOINT)
@@ -849,10 +859,21 @@ int print_addrinfo(const struct sockaddr_nl *who, struct
nlmsghdr *n,
fprintf(fp, " family %d ", ifa->ifa_family);
if (rta_tb[IFA_LOCAL]) {
- fprintf(fp, "%s", format_host(ifa->ifa_family,
- RTA_PAYLOAD(rta_tb[IFA_LOCAL]),
- RTA_DATA(rta_tb[IFA_LOCAL]),
- abuf, sizeof(abuf)));
+ if (ifa->ifa_family == AF_INET)
+ color_fprintf(fp, COLOR_INET, "%s",
format_host(ifa->ifa_family,
+ RTA_PAYLOAD(rta_tb[IFA_LOCAL]),
+ RTA_DATA(rta_tb[IFA_LOCAL]),
+ abuf, sizeof(abuf)));
+ else if (ifa->ifa_family == AF_INET6)
+ color_fprintf(fp, COLOR_INET6, "%s",
format_host(ifa->ifa_family,
+ RTA_PAYLOAD(rta_tb[IFA_LOCAL]),
+ RTA_DATA(rta_tb[IFA_LOCAL]),
+ abuf, sizeof(abuf)));
+ else
+ fprintf(fp, "%s", format_host(ifa->ifa_family,
+ RTA_PAYLOAD(rta_tb[IFA_LOCAL]),
+ RTA_DATA(rta_tb[IFA_LOCAL]),
+ abuf, sizeof(abuf)));
if (rta_tb[IFA_ADDRESS] == NULL ||
memcmp(RTA_DATA(rta_tb[IFA_ADDRESS]),
RTA_DATA(rta_tb[IFA_LOCAL]),
diff --git a/lib/Makefile b/lib/Makefile
index 4c7cbc2..1d4045f 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -7,7 +7,7 @@ endif
CFLAGS += -fPIC
UTILOBJ=utils.o rt_names.o ll_types.o ll_proto.o ll_addr.o inet_proto.o namespace.o \
- names.o
+ names.o color.o
NLOBJ=libgenl.o ll_map.o libnetlink.o
diff --git a/lib/color.c b/lib/color.c
new file mode 100644
index 0000000..c555642
--- /dev/null
+++ b/lib/color.c
@@ -0,0 +1,66 @@
+#include <stdio.h>
+#include <stdarg.h>
+
+#include "color.h"
+
+enum color
+{
+ C_RED,
+ C_GREEN,
+ C_YELLOW,
+ C_BLUE,
+ C_MAGENTA,
+ C_CYAN,
+ C_WHITE,
+ C_CLEAR
+};
+
+static const char * const color_codes[] =
+{
+ "\e[31m",
+ "\e[32m",
+ "\e[33m",
+ "\e[34m",
+ "\e[35m",
+ "\e[36m",
+ "\e[37m",
+ "\e[0m",
+ NULL,
+};
+
+static enum color attr_colors[] =
+{
+ C_CYAN,
+ C_YELLOW,
+ C_MAGENTA,
+ C_BLUE,
+ C_GREEN,
+ C_RED
+};
+
+static int color_is_enabled = 0;
+
+void enable_color(void)
+{
+ color_is_enabled = 1;
+}
+
+int color_fprintf(FILE *fp, enum color_attr attr, const char *fmt, ...)
+{
+ int ret = 0;
+ va_list args;
+ va_start(args, fmt);
+
+ if (!color_is_enabled) {
+ ret = vfprintf(fp, fmt, args);
+ goto end;
+ }
+
+ ret += fprintf(fp, "%s", color_codes[attr_colors[attr]]);
+ ret += vfprintf(fp, fmt, args);
+ ret += fprintf(fp, "%s", color_codes[C_CLEAR]);
+
+end:
+ va_end(args);
+ return ret;
+}
diff --git a/man/man8/ip.8 b/man/man8/ip.8
index 44d1ee6..43ddac9 100644
--- a/man/man8/ip.8
+++ b/man/man8/ip.8
@@ -33,7 +33,8 @@ ip \- show / manipulate routing, devices, policy routing and
tunnels
.BR inet " | " inet6 " | " ipx " | " dnet " | " link " } | "
\fB\-o\fR[\fIneline\fR] |
\fB\-n\fR[\fIetns\fR] name |
-\fB\-a\fR[\fIll\fR] }
+\fB\-a\fR[\fIll\fR] |
+\fB\-c\fR[\fIolor\fR] }
.SH OPTIONS
@@ -165,6 +166,10 @@ to
.BR "\-a" , " \-all"
executes specified command over all objects, it depends if command supports
this option.
+.TP
+.BR "\-c" , " -color"
+Use color output.
+
.SH IP - COMMAND SYNTAX
.SS
--
2.3.5
--
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